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4.gram is 45º. Find the measure of the obtuse angle.ABCD is a trapezium such that ABCD, ZA:ZD = 2:1, ZB:ZC = 7:5. Find the angles of the trapezium.decon |
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Answer» ABCD is a trapezium....givenAB||CD...givenLet angle A=2x,B=7x,C=5x and D=x...from given and sayTherefore,AB||CD with transversal BCTherefore angle ABC+angle DCB=180°...interior anglesi.e. angle C+angle B=180°therefore 5x+7x=180°12x=180°x=15therefore angle A=2x=2×15°=30,B=7x=7×15=105°,C=5x=5×15=75° and D=x=15° HOPE IT HELPED U IF IT HELPED PLZ MARK AS BEST ANSWER |
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